What is the cost-benefit relation regarding sewage treatment as a strategy to fight water pollution?
What is competition? Which type of ecological interaction is competition?
What is commensalism?
What is the climax stage of an ecological succession?
Define ecology?
Define harmonious ecological interaction?
What is the respective importance of water for the living beings?
What are the typical vegetation and the typical fauna of the deserts?
Explain why the tropical forests are also known as stratified forests?
What are tropic levels?
What is parasitism?
What is the gross primary production of an ecosystem? How does GPP relate to photosynthesis?
How are ecological interactions classified?
What is population?
Is the upward move of the warm air good or bad for the dispersion of pollutants?